Package org.springframework.context.expression

Class EnvironmentAccessor

java.lang.Object
org.springframework.context.expression.EnvironmentAccessor
All Implemented Interfaces:
org.springframework.expression.PropertyAccessor
public class EnvironmentAccessor extends Object implements org.springframework.expression.PropertyAccessor
Read-only EL property accessor that knows how to retrieve keys of a Spring Environment instance.
Since:
3.1
Author:
Chris Beams

  • Constructor Summary

    Constructors
    Constructor
    Description
    EnvironmentAccessor()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    canRead(org.springframework.expression.EvaluationContext context, Object target, String name)
    Can read any Environment, thus always returns true.
    boolean
    canWrite(org.springframework.expression.EvaluationContext context, Object target, String name)
    Read-only: returns false.
    Class<?>[]
    getSpecificTargetClasses()
     
    org.springframework.expression.TypedValue
    read(org.springframework.expression.EvaluationContext context, Object target, String name)
    Access the given target object by resolving the given property name against the given target environment.
    void
    write(org.springframework.expression.EvaluationContext context, Object target, String name, Object newValue)
    Read-only: no-op.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • EnvironmentAccessor

      public EnvironmentAccessor()

  • Method Details

    • getSpecificTargetClasses

      public Class<?>[] getSpecificTargetClasses()
      Specified by:
      getSpecificTargetClasses in interface org.springframework.expression.PropertyAccessor

    • canRead

      public boolean canRead(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name) throws org.springframework.expression.AccessException
      Can read any Environment, thus always returns true.
      Specified by:
      canRead in interface org.springframework.expression.PropertyAccessor
      Returns:
      true
      Throws:
      org.springframework.expression.AccessException

    • read

      public org.springframework.expression.TypedValue read(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name) throws org.springframework.expression.AccessException
      Access the given target object by resolving the given property name against the given target environment.
      Specified by:
      read in interface org.springframework.expression.PropertyAccessor
      Throws:
      org.springframework.expression.AccessException

    • canWrite

      public boolean canWrite(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name) throws org.springframework.expression.AccessException
      Read-only: returns false.
      Specified by:
      canWrite in interface org.springframework.expression.PropertyAccessor
      Throws:
      org.springframework.expression.AccessException

    • write

      public void write(org.springframework.expression.EvaluationContext context, @Nullable Object target, String name, @Nullable Object newValue) throws org.springframework.expression.AccessException
      Read-only: no-op.
      Specified by:
      write in interface org.springframework.expression.PropertyAccessor
      Throws:
      org.springframework.expression.AccessException